Spring-roller assembly



July 24, 1928.

; 1,678,590 H. DIXSON I SPRING ROLLER ASSEMBLY Filed July t at-ended July 2d, 3928.

UNETED STATEfi PATEN 'r 0am.

may mxson, or has momns, IOWA.

SEEING-ROLLER ASSEMBLY.

Application filed July 10,

kind shown in my prior application, Serial No. 29,960, filed May 13, 1925 from which the subject matter of th1s application is in part divided out.

It is well known that in manufacturing roller assemblies for window screens, it is desirable-to provide parts which so far as possible ma be standard and yet which can be rea ily and easily adjusted somewhat in their relations to each other for use with window screens of different widths.

One purpose of my present invention is to provide such an assembly which by very slight modifications of the parts may be readily adapted for screens of a considerable variety of widths.

Another purpose of my invention is to provide a spring having one end slightlfy contracted to snugly fit around a sha t or rod upon which it is mounted and having its major portion of greater diameter than the shaft.

With these and other objects in view, my invention consists in the construction, arrangement and combination of the various parts of my spring roller assembly, whereby the objects contemplated are attained, as hereinafter more fully set forth, pointed out in my claims, and illustrated in the accompanying drawings, in which:

Figure 1 is an end elevation of a screen roller assembly embodying my invention.

Figure 2 is a longitudinal, central, sectional view of the same;

Figure 3 is a perspective View of one end of the casing, parts being broken away and parts being shown in section.

Figure v4' is a perspective view of one end of the roller, part being broken away and parts being shown in section.

Figure 5 is a detail, sectional view taken on the line 5-5 of Figure 2.

1926. Serial 1T0. 121,704.

0 Figure 6 is a similar view taken on the line 6-'6 of Figure 2; and

Figure 7 is an end view of a slightly modified form of the device.

In the accompanying drawings, I have used the reference numeral 10 to indicate generally a tubular casing, which is preferably rectangular in cross section.

It will be seen that the bends for this casing may be readily made and that the casing may be made of various lengths by simply cutting it off.

At what is the lower forward part of the casing, the bottom wall 10 is provided with a slot 11, shown in Figure 6, for the passage of the screen 12 wound on the roller hereinafter referred to.

It is desirable that the screen roller be so mounted that no ortions thereof project beyond the ends of the casing, so that the casing may be et in the window frame with its ends flush with permanent parts of the window frame.

I have therefore provided for the casing 10, the end members 12 in the form of plates fitting into the ends of the casing 10 and provided with peripheral, outwardly proecting flanges 13.

The flanges 13 and the wall of the casing 10 adjacent to the ends thereof are provided with slots 14: and 15 elongated lengthwise of the main casing 10.

The end members are fastened into the casing 10 by spot welding or the like as indicated at 16. j

It will be seen that on account of the construction hereinbefore explained, the end members may be adjusted in the casing 10 for allowing considerable variation in the arrangement of the parts to suit the conditions under which the screens are to be installed.

The crew bolts can be inserted at the sides I i the roller 17 and held by friction or soldered or otherwise fastened.

Each end disc 20 has a central hole 22 to receive a shaft 23, which has in both ends the elongated slots 24.

The spring 19 has one end formed with a portion adapted to be projected through the hole 18 and its other end formed with a portion 26 shown in Figure 6 arranged to lie in a straight line across the center of the spring.

The construction of the parts and the convenience thereof for manufacture and especially for assembling maybe illustrated by describing the manner of assembling my spring roller construction.

The method of assembly may be varied somewhat, but may be illustrated as follows:

The right-hand end 12 of the casing 10 is assembled in position. The right-hand end 20 of the roller 17 is assembled in position.

- The spring 19 is inserted into the roller 17 from the other end and is rotated until the end 25 can be projected through the hole 18, whereupon the end 25 is bent over enough to revent its accidental removal.

The leftand end 20 is then inserted in the roller 17. The shaft 23 is then inserted through the left-hand end 20 and shoved longitudinally through the spring until the right-hand end of the shaft reaches the spring end 26.

The shaft is then rotated until the righthand slot 24 registers with "the end 26 and the shaft is then shoved farther to the right, causing the end 26 to be received in the right-hand slot 24 and causing the righthand end of the shaft to pro ect through the right-hand end 20 of the roller 17 It will be noted that the right-hand end of the spring 19 is reduced in diameter, as at 19, so that it more easily enters the slotted end of the shaft for facilitating this assembling operation.

' The spring is ordinarily under such tension that when the shaft is moved to the right a sufiicient distance for the final assembly, the tension of the spring tends to move it to the left. The shaft must therefore be held in position and the roller slipped into the left-hand end of the casing 10, until the right-hand end of the shaft 23 projects through the right-hand end of the casing 10. j

A rod 27 is then slipped into the righthand slot 24.

As shown inFigure 2, the rod 27 has a right-angled extension 28 received in a suitable hole 29 in the appropriate end member l2sadjacent to the corner thereof at the top of the casing 10 above the slot 11.

A cotter pin 30 is then slipped through a hole 31 in the shaft 23 outside the righthand end 12. This prevents the tension of the spring from withdrawing the shaft from such end. v

The left-hand end. 12 is then assembled in position with the left-hand end of the shaft 23 projecting therefrom.

A rod 27 similar to that already described is assembled at the left-hand end of the device and the portions of the shaft 23 on opposite sides of the left-hand slot 24 may, if desired, be pinched together for preventing any accidental removal of the left-hand rod 27.

The holes in the endmembers 12 shown at 32 may be curved on the arc of a circle,

having its center at the center of the extension 28 for permitting some swinging movement of the shaft and roller.

It should perhaps have been mentioned that the screen is wound on the roller before the shaft is assembled therein, and that when the roller is slipped into the casing 10, the projecting part of the screen slides through the slot 11. This portion of the screen is preferably provided with abinder strip 33.

The left-hand end 12 may be accurately adjusted by means of the screws or the like which may be inserted in the elongated slots 14 and 15.

I have used the reference numeral 16 to indicate the means of connection between the casing ends and the main body portion of the casing which may be spot welded or bolted as desired. V

In Figures 3 and 7, I have shown a slightly modified form of the device in which the ends of the casing 10 are indicated by the numeral 12 and are provided with the round holes 34 for the ends of the shaft. Instead of the rods 27, the form of the device shown in Figure 7 is provided with rods 35, which extend diagonally across the end of the casing within the flanges 13, so

as to prevent any rotation of the shaft 23. A construction as herein described can be readily and quickly assembled as will be seen from the foregoing explanation.

It is such as to make the manufacture and assembly relatively inexpensive. It is also such as to greatly facilitate the speed with 10, and in addition to being readily adjustable to different distances from each other, are such as to effectively reinforce the casing 10 against twisting strains. They also afford convenient means for pivotally supporting the rods 27 for permitting the swinging movement of the roller and shaft where that is desired.

Where the form of the device shownan Figure 7 is employed, the angular outline provides the corners to receive the ends of the rods 35 for holding them so that the shaft cannot rotate.

The roller 17 has its cup-shaped ends, which can bequickly and easily inserted and held by friction or spot-welded as shown at 38 in Figure 4.

Another great advantage of a structure of this kind arises from the fact that the parts may be quickly and easily disassembled for replacing the spring or any other parts that may have become worn or broken.

These features are of great importance for the convenience of contractors, builders and users, and therefore are of great commercial value.

Changes may be made in the details of the construction and arrangement of the various parts of my improved spring roller assembly without departing from the real spirit and purpose of my invention, and it is my intentionto cover by my claims, any modified forms of structure or use of mechanical equivalents, which may be reasonably included within their scope.

I claim as my invention:

1. In a spring roller assembly, a tubular casing angular in cross section, having ends adapted to be mounted therein at different distances apart, a tubular roller, a shaft journaled in the ends of the roller projected thr'ough theends of the casing, having an end slotted, a coil spring in the roller having an end attached thereto and an end received in said slot in said shaft, removable means for preventing sliding movement of the shaft through the casing end to release the last-named spring end, and means for preventing rotation of the. shaft comprising a rod received in said slotted end and projected into an angular corner of the casing.

2.. In a spring roller assembly, a tubular casing rectangular in cross section, having inset ends, adapted to be mounted therein at different distances apart, a tubular roller, a shaft journaled in the ends of the roller projected through the ends of the casing, having its ends slotted, a coil spring in the roller having an end attached thereto and an end received in a slot in the end of the shaft, removable means for preventing sliding movement of the shaft through the easing end to release the last-named spring end, and means for preventing rotation of the shaft, comprising rods in said slots, adjacent to the inset casing ends, projecting into angular corners of the casing, the shaft being shorter than the casing.

3. In a spring roller mounting, a tubular casing rectangular in cross section, cupshaped ends angular in cross section to fit the casing and reenforce it against twisting strains, received in the ends of said casing and secured thereto and provided with holes to receive a shaft, a tubular roller having end bearings, a shaft having slots in both ends projecting through the ends of the easing and the tubular roller, a spring in the roller having one end connected with the roller and the other end received in a slot in said shaft, a pin extended through the shaft for preventing the withdrawal of the shaft from its assembled position longitudinally, and means for engaging an end of the casing for holding the shaft against rotation.

4:. In a spring roller assembly, a tubular casing angular incross section having ends adapted to be mounted therein at different distances apart, a tubular roller, a shaft journaled in the ends of the roller projected through the ends of the casing, having an end slotted, a coil spring in the roller having an end attached thereto and an end received in said slot in said shaft, removable means for preventing sliding movement of the shaft through the casing end to releasethe last-named spring end, and means for preventing rotation of the shaft comprising a rod carried by the shaft transversely thereof and adapted to be fixedly held relative to said casing.

5. In a spring roller assembly, a tubular casing having inset end members, a tubular roller in said casing between said inset end members, a shaft having an end slotted journaled in the ends of the roller and projected through the inset end members, a coil spring in the roller having an end attached thereto and an end received in said slot in said shaft, removable means for preventing slidin'g movement of the shaft through the easing end to release the last-named spring end mounted on the outside of one of said inset end members and within the outline of said casing and a rod carried by said shaft and arranged transversely thereof fixedly held relative to said casing for preventing rotation of said shaft.

Des Moines, Iowa, June 11, 1926.

HARRY DIXSON. 

